1211012020210 has 8 divisors (see below), whose sum is σ = 2179821636396. Its totient is φ = 484404808080.

The previous prime is 1211012020151. The next prime is 1211012020223. The reversal of 1211012020210 is 120202101121.

It can be written as a sum of positive squares in 2 ways, for example, as 1090982339001 + 120029681209 = 1044501^2 + 346453^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1211012020210² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60550601001 + ... + 60550601020.

Almost surely, 2^{1211012020210} is an apocalyptic number.

1211012020210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211012020210 is a deficient number, since it is larger than the sum of its proper divisors (968809616186).

1211012020210 is a wasteful number, since it uses less digits than its factorization.

1211012020210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121101202028.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1211012020210 its reverse (120202101121), we get a palindrome (1331214121331).

The spelling of 1211012020210 in words is "one trillion, two hundred eleven billion, twelve million, twenty thousand, two hundred ten".